Pennsylvania Law Clarification

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I have been researching the specific laws for SD and SDIT for Pennsylvania. I have found an interesting wording and I am hoping someone here is also in PA and can clarify. The law reads in part that service dogs or service dogs in training have full access, but only when they are working with a "certified trainer." I cannot find what PA considers a certified trainer.
Samson is getting his CGC and then his public access test, but I don't know if that is what they are referring to or not.
Thanks for any help anyone can provide.

Sorry, Abigail, I didn't say it quite right. They are saying the dog has to have the training of a certified trainer to be protected under the service dog laws in PA. The law protects dogs in and done with training, but only if working with, under or have already been certified by a certified trainer. Since there is no official certification or registry, I just wonder what PA considers a certified trainer.

Thank you! That sounded odd to me too. Do you have a link to the ADA federal law that I can access? Since I am the only SD team in my area, I want to have as much as possible ready to educate folks and make the process as simple for myself as possible.